IE 11 is not supported. For an optimal experience visit our site on another browser.

The Weekly Download: Coronavirus vaccine trial, winter weather whiplash

02:11

Weekend TODAY’s Kristen Welker takes a look back at the biggest stories of the week, including drug giant AstraZeneca pausing its vaccine trials after a participant developed a serious inflammation of the spinal cord, the shake-up at the Rochester Police Department following the death of Daniel Prude and the extreme weather changes in Colorado that saw temperatures dropping as much as 60 degrees.